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| author | NeilBrown | 2010-07-26 03:57:07 +0200 |
|---|---|---|
| committer | NeilBrown | 2010-07-26 04:52:29 +0200 |
| commit | 11d8a6e3719519fbc0e2c9d61b6fa931b84bf813 (patch) | |
| tree | 13a075d1423b2caa3d3264db0cf8cd378c545623 /drivers/md/raid5.h | |
| parent | raid5: Don't set read-ahead when there is no queue (diff) | |
| download | kernel-qcow2-linux-11d8a6e3719519fbc0e2c9d61b6fa931b84bf813.tar.gz kernel-qcow2-linux-11d8a6e3719519fbc0e2c9d61b6fa931b84bf813.tar.xz kernel-qcow2-linux-11d8a6e3719519fbc0e2c9d61b6fa931b84bf813.zip | |
md/raid5: export is_congested test
the dm module will need this for dm-raid45.
Also only access ->queue->backing_dev_info->congested_fn
if ->queue actually exists. It won't in a dm target.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid5.h')
| -rw-r--r-- | drivers/md/raid5.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h index 61b6b25dc5e7..d6470dec667a 100644 --- a/drivers/md/raid5.h +++ b/drivers/md/raid5.h @@ -497,5 +497,7 @@ static inline int algorithm_is_DDF(int layout) { return layout >= 8 && layout <= 10; } + +extern int md_raid5_congested(mddev_t *mddev, int bits); extern int raid5_set_cache_size(mddev_t *mddev, int size); #endif |